Support metadata parameters in body models and use methodParameterSegments for accessor paths#3848

JialinHuang803 wants to merge 1 commit intoAzure:mainAzure/autorest.typescript:mainfrom

JialinHuang803:fix/override-group-parametersJialinHuang803/autorest.typescript:fix/override-group-parametersCopy head branch name to clipboard